Independent wing locking device for revolving doors



June 19, 1934. R. L. BLANCHARD INDEPENDENT WING LOCKING DEVICE FOR REVOLVING DOORS 2 Sheets-Sheet l Filed 001'.. 3, 1932 2 W m m ma m In O ma T VZ T m. A L o wm w R WITNEssEs av/0:2147

June 19, 1934. R L BLANCHARD 1,963,881

INDEPENDENT WING LOCKING DEVICE FOR REVOLVING DOORS Filed Oct. 5, 1952 2 Sheets-Sheet 2 INVENTOR 6 RoaewfL-,Bamhwd wlTNEssEs 2W BY iik Patented June 19, 1.934

PATENT oFFlcE INDEPENDENT WING LOCKING DEVICEA FOR REVOLVING DOORS Robert L. Blanchard, New York, N. Y., assignor to VanKannel Revolving Door Company, New York, N. Y., a corporation of New Jersey Application October 3,

5 Claims.

This invention has relation to revolving doors, and particularly those of the type known as full collapsible panic proof revolving doors, in which a plurality of wings are carried by a rotary center support or spindle for independent relative swinging movement from their normal radial relation to the center support, to either a fully collapsed parallel position projecting from one side of the center support 'or to a semi-collapsed or folded position where a pair of wings projects from diametrically opposite sides of the central support.

The present invention is in the nature of animprovement upon my co-pending application, Serial No. 537,437, filed May 14, 1931, and in addi tion to attaining the same general objects as set forth in connection with said prior application, the present invention aims to generally improve upon the hardware and to reduce and simplify the number of parts necessary, whereby the door may be more economically produced, assembled, installed and maintained in working condition.

More particularly, the invention resides in an independent wing locking device for revolving doors of the character set forth, which includes automatically and manually releasable means onv the center support and on each wing for individually locking the wings in their unfolded radial relation.

With these and other objects in view, reference is made to the following specification and the accompanying drawings, in which there is disclosed a single and preferred embodiment of the invention, while the claims mark out and define the scope of the invention.

In the drawings:

Figure 1 is a fragmentary vertical sectional View through a revolving door structure constructed in accordance with the inventionV and illustrating the door wings in their normal radial position.

Figure 2 is a sectional plan View on an enlarged scale, showing the position of parts when the door wings are in fully collapsed condition.

Figure 3 is a fragmentary sectional plan view on a further enlarged scale, illustrating the door wing in its radial position,

Figure 4 is a vertical fragmentary sectional view taken approximately on the line 4-4 of Figure 3.

Figure 5 is a View similar to Figure 2 illustrating the position of parts when the door is in semi-collapsed folded condition.

Figure 6 is a detailed fragmentary sectional 1932, Serial No. 636,048

view taken approximately on the line 6-6 of Figure 4.

Referring to the drawings by characters of referenc-e, l0 designates the door wings which are carried by a center support consisting of a vertically disposed rotatable spindle 11 and vertically spaced members or disks 12-12 keyed to the center support and located respectively adjacent the upper andV lower ends thereof. The upper and lower inner corners of each door wing 10 are rabbeted or cut away at 13 and have applied thereto the escutcheon plates or castings 14 which are of generally channel shaped cross sectional conguration and horizontally bifurcated to t over the members or disks 12. The bifurcated portion 7G of the plates or castings 14 defines a lower furcation 15 which is formed with upstanding pins 16 and 17 cooperating with the grooved portion 18'l of the disks or members 12, whereby the door wings are mounted for guided independent relative swinging movement with respect to the center support.

This describes generally one form of full collapsible panic proof door which is substantially the same as shown in my co-pending application, Serial No. 518,569, iiled February 26, 1931. 1n order to provide means on eachv wing engageable with the center support forlocking the wings in unfolded radial position, which means may be either manually released or automatically released by the exertion of a predetermined pressure in excess of that necessary to revolve the door in its ordinary operation, the members or disks 12 on the center support are each provided with a notch or groove 20 for each wing, which notches or grooves open Vthrough a horizontal face and the periphery of the disk. As shown, the notch or groove is formed with oppositely beveled side walls 21, which walls diverge toward the horizontal face through which the notch or groove opens. The plate or casting 14 has rockably mounted therein a detent element 22 which is preferably in the nature of an elongated cross sectionally rectangular inherently resilient bar which is disposed within a recessed web 23 where 100 it is conned against lateral movement while its inner and outer ends 24 and 25 are located respectively between the outer edge 26 of the upper furcation 27 of the casting and the inner surface of an outer web 28 of the casting, to prevent any appreciable longitudinal movement thereof. A cross pin 29 extends transversely of the casting and is disposed over the detent bar and the recessed web while a coiled contractile spring 30 is arranged in a, spring seat 31 formed 'llo in the web 23 and engages with the detent bar 22 between its inner end 24 and the cross pin 29, so as to function to normally move the end 24 out of engagement with the keeper notch 20. A cam 32 is located within the casting or plate 14 and has a high point 33 which is movable into and out of engagement with the under side of the detent bar adjacent its outer end 25. The cam 32 is secured to a cam shaft 34 which is journaled in the plate or casting 14 and is provided with external manipulating handles 35. Under this construction and arrangement, when the cam 32 is disposed in the full line position illustrated in Figure 4, the detent bar 22 is moved against the tension of the spring 30 to the active full line locking position Where its inner end engages in the keeper notch 20. This locks the door wing 10 in its normal unfolded radial position against-accidental or unintentional swinging movement with reference to the center support. When the door wings are to be folded, the manipulating handles 35 are moved to swing the cams 32 to the dotted line position illustrated in Figure 4, permitting the spring toV rock the detent bar 22 to the dotted line position shown in Figure 4, where the inner terminal 24 of the detent bar is retracted from the keeper notch 20 to permit of free movement of the door wing.

With the detent 22 in the full line wing locking position illustrated in Figure 4, it is possible to automatically release the wing in event of a panic or other emergency by exerting on the wing a predetermined pressure in excess of that required for turning the door in its ordinary operation, which pressure causes the camming and iiexing of the inner end or terminal 24 of the detent bar 22 out of the keeper notch, due to the riding of the same upwardly over the inclined side Wall 21 of the notch.

In order to'retain the door wings in the semicollapsed or folded condition illustrated in Figure 5, the disks or members 12 are provided on either side of the keeper notch 20 with auxiliary keeper notches 36 with which the detent bar terminals 24 engage when the same are disposed in the full line position illustrated in Figure 4 and from which they may be disengaged by turning of the cams to the dotted line position. By providing the auxiliary notches 36, the wings may be locked in pairs projecting from diametrically opposite sides of the center support, as clearly illustrated in Figure 5 of the drawings.

From the foregoing, it will thus be seen that an independent wing locking device for revolving doors' of the character set forth has been devised, which lock may be automatically released in event of a panicV or other emergency and the door collapsed by exerting a predetermined pressure in opposite directions on adjacent Wings, which pressure is, of course, in excess of that required ordinarily to rotate the door, and which means is also capable of manual release by rocking of the detent elements through manipulation of the cams.

What is claimed is:

1. A full collapsible panic prooi revolving door including in combination a rotary center support, a plurality of wings Ycarried thereby for independent relative swinging movement with respect thereto and automatic and manually releasable means on the center support and each wing for individually locking the Wings in unfolded radial relation, said means comprising a notched keeper portion of the center support for each wing, an inherently resilient rockably mounted detent carried by each wing automatically releasable by iiexure thereof under a predetermined pressure in excess of that necessary to revolve the door and manually releasable by rocking thereof.

2. A full collapsible panic proof revolving door including in combination a rotary center support, a plurality of wings carried thereby for independent relative swinging movement with respect thereto and automatic and manually releasable means on the center support and each Wing for individually locking the wings in unfolded radial relation, said means comprising a notched keeper portion on the center support for each wing, an inherently resilient rockably mounted detent carried by each wing automatically releasable by iiexure thereof under a predetermined pressure in excess of that necessary to revolve the door and manually releasable by rocking thereof and means having an exposed manipulator for manually rocking said detent.

3. A full collapsible panic proof revolving door including in combination a rotary center support, a plurality of wings carried thereby for independent relative swinging movement with respect thereto and automatic and manually releasable means on the center support and each wing for individually locking the wings in unfolded radial relation, said means comprising a notched keeper portion of the center support for each wing, an inherently resilient rockably mounted detent carried by each Wing automatically releasable by iiexure thereof under a predetermined pressure in excess of that necessary to revolve the door and manually releasable by rocking thereof and means having an exposed manipulator for manually rocking said detent, said means including a cam engaging one end of the detent.

4. In a full collapsible panic proof revolving door which includes a rotary center support and a plurality of wings carried thereby for independent relative swinging movement with respect thereto, interengaging means on the center support and each Wing for locking the Wings in an unfolded radial relation comprising a notched keeper portion of the center support for each wing', a resilient rockable latch ba carried by each door Wing and manual means for rocking the latch bar into and out of thenotched keeper portion.

5. In a full collapsible panic proof revolving door which includes a rotary center support and a plurality of Wings carried thereby for independent relative swinging movement with respect thereto, interengaging means on the center support and each wing for locking the wingsin an unfolded radial relation comprising a notched I:

keeper portion of the center support for each wing, an inherently resilient rockably mounted detent bar carried by each door Wing and means having an Vexposed manipulator for manually rocking the detent bar to active and inactive positions whereby said door Wings may be manually released and folded or automatically collapsed by iiexing of the detent bar under a pressure in excess of that required for revolving the door.

ROBT. L. BLANCHARD; 

